Help understanding the Alvik power system
I'm trying to understand the power system of the Alvik, as I'd like to create a similar 2-wheeled bot powered with the same 18650 battery and Arduino Nano ESP32.
Images below are from the Alvik datasheet: https://docs.arduino.cc/resources/datasheets/AKX00066-datasheet.pdf
- When powered by battery, the Arduino Nano ESP32 is powered directly through its 3.3V pin, correct? I see no connections to any other power source.
- Is there a difference between the '3V3' and '3V3_EXT' power rails depicted in the block diagram? Where is the '3V3_EXT' rail powered from?
- When the Arduino Nano ESP32 is powered via USB, how does that begin charging the battery?
1 Reply
Hey,
1. for Findung out the Vcc Form your arduinochip look in the pinout/datasheet. Im only using the UNO so i cant say if there is a difference.
2. The 3V3ext should come from Extern, not Form Battery.
3. do you know the Programm oft the esp32. Perhaps there is an Input wich starts the loadingprocess by existent Voltage Form extern.
careful USB is 5v so has to be a currencydevider or a linear voltage regulator integrated.